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HD 148642


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Classification of Population II Stars in the Vilnius Photometric System. II. Results
The results of photometric classification of 848 true and suspectedPopulation II stars, some of which were found to belong to Population I,are presented. The stars were classified using a new calibrationdescribed in Paper I (Bartkevicius & Lazauskaite 1996). We combinethese results with our results from Paper I and discuss in greaterdetail the following groups of stars: UU Herculis-type stars and otherhigh-galactic-latitude supergiants, field red horizontal-branch stars,metal-deficient visual binaries, metal-deficient subgiants, stars fromthe Catalogue of Metal-deficient F--M Stars Classified Photometrically(MDPH; Bartkevicius 1993) and stars from one of the HIPPARCOS programs(Bartkevicius 1994a). It is confirmed that high galactic latitudesupergiants from the Bartaya (1979) catalog are giants or even dwarfs.Some stars, identified by Rose (1985) and Tautvaisiene (1996a) as fieldRHB stars, appear to be ordinary giants according to our classification.Some of the visual binaries studied can be considered as physical pairs.Quite a large fraction of stars from the MDPH catalog are found to havesolar metallicity. A number of new possible UU Herculis-type stars, RHBstars and metal-deficient subgiants are identified.

Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

On the Distance of the Scorpio / Centaurus Dark Cloud
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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Akrep
Sað Açýklýk:16h30m34.08s
Yükselim:-25°28'14.2"
Görünürdeki Parlaklýk:8.657
Uzaklýk:79.808 parsek
özdevim Sað Açýklýk:-1.2
özdevim Yükselim:-36.2
B-T magnitude:9.283
V-T magnitude:8.709

Kataloglar ve belirtme:
Özgün isimleri
HD 1989HD 148642
TYCHO-2 2000TYC 6799-463-1
USNO-A2.0USNO-A2 0600-20647364
HIPHIP 80844

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